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资料和方法：全部病例均是1996年10月至1998年3月三所医院神经内科诊治的脑梗塞患者。共调查了1048例，其中男性675例，女性373例。年龄31～87岁，小于49岁140例，50～59岁247例，60～69岁387例，大于70岁274例，平均年龄63．18岁。全部患者均符合1995年全国第四届脑血管病学术
Materials and Methods: All cases were patients with cerebral infarction who were diagnosed and treated in the neurology department of three hospitals from October 1996 to March 1998. A total of 1048 cases were investigated, including 675 males and 373 females. Age 31-87 years old, less than 49 years old 140 cases, 50-59 years old 247 cases, 60-69 years 387 cases, more than 70 years old 274 cases, average age 63.18 years old. All patients are in line with the 1995 Fourth National Cerebrovascular Disease Academic